About Your Monitor 13Environmental CharacteristicsTemperatureOperating 0 °C to 40 °CNon-operating Storage: -20 °C to 60 °C (-4 °F to 140 °F)Shipping: -20 °C to 60 °C (-4 °F to 140 °F)HumidityOperating 10% to 80% (non-condensing)Non-operating Storage: 5% to 90% (non-condensing)Shipping: 5% to 90% (non-condensing)AltitudeOperating 5,000 m (16,400 ft) maxNon-operating 12,191 m (40,000 ft) maxThermal dissipation 409.46 BTU/hour (maximum)307.09 BTU/hour (typical)Power Management ModesIf you have VESA’s DPM™ compliance display card or software installedin your PC, the monitor can automatically reduce its power consumptionwhen not in use. This is referred to as Power Save Mode. If the computerdetects input from keyboard, mouse, or other input devices, the monitorautomatically resumes functioning. The following table shows the powerconsumption and signaling of this automatic power saving feature:VESA Modes HorizontalSyncVerticalSyncVideo PowerIndicatorPower Consump-tionNormaloperation Active Active Active White 90 W (typical)/120 W (maximum)Active-offmode Inactive Inactive Off GlowingWhiteLess than 1.2 W(with USB Hub)Switch off - - - Off Less than 0.5 WThe OSD will only function in the normal operation mode. When any buttonis pressed in Active-off mode, the following message will be displayed:Dell UP2414QThere is no signal coming from your computer.Press any key on the keyboard or move the mouse to wake it up.If there is no display, press the monitor button now to select the correctinput source on the On-Screen-Display menu.